Question

The permanent magnet moving coil type instrument are best suited for
1. A. C. Measurement
2. D.C. Measurement
3. A. C. / D. C. Measurement
4. Frequency measurement

Answer 1

Correct Answer - Option 2 : D.C. Measurement

• The permanent magnet moving coil type instrument is best suited for DC measurement only.
• Moving coil type instrument measure only Average value of quantity.
   

Type of Measuring Instrument:

Type	Effect	Suitable for	Work as
Moving Iron	Magnetic Effect	DC, AC	Ammeter, Voltmeter
PMMC (Permanent Magnet Moving Coil)	Electro-dynamic Effect	DC	Ammeter, Voltmeter
EMMC (Dynamometer)	Electro-dynamic Effect	DC, AC	Ammeter, Voltmeter, Wattmeter
Induction Type	Electro-Magnetic Induction	AC	Ammeter, Voltmeter, Wattmeter, Energy Meter
Hot Wire	Thermal Effect	DC, AC	Ammeter, Voltmeter
Electrolyte Meter	Chemical Effect	DC	Amp-Hr Meter
Electrostatics Meter	Electrostatics Effect	DC, AC	Voltmeter